Class: Fluent::KafkaInput::TopicWatcher
- Inherits:
-
Coolio::TimerWatcher
- Object
- Coolio::TimerWatcher
- Fluent::KafkaInput::TopicWatcher
- Defined in:
- lib/fluent/plugin/in_kafka.rb
Instance Method Summary collapse
- #consume ⇒ Object
-
#initialize(topic_entry, kafka, interval, parser, add_prefix, add_suffix, offset_manager, router, kafka_message_key, time_source, options = {}) ⇒ TopicWatcher
constructor
A new instance of TopicWatcher.
- #on_timer ⇒ Object
Constructor Details
#initialize(topic_entry, kafka, interval, parser, add_prefix, add_suffix, offset_manager, router, kafka_message_key, time_source, options = {}) ⇒ TopicWatcher
Returns a new instance of TopicWatcher.
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# File 'lib/fluent/plugin/in_kafka.rb', line 243 def initialize(topic_entry, kafka, interval, parser, add_prefix, add_suffix, offset_manager, router, , time_source, ={}) @topic_entry = topic_entry @kafka = kafka @callback = method(:consume) @parser = parser @add_prefix = add_prefix @add_suffix = add_suffix @options = @offset_manager = offset_manager @router = router @kafka_message_key = @time_source = time_source @next_offset = @topic_entry.offset if @topic_entry.offset == -1 && offset_manager @next_offset = offset_manager.next_offset end @fetch_args = { topic: @topic_entry.topic, partition: @topic_entry.partition, }.merge(@options) super(interval, true) end |
Instance Method Details
#consume ⇒ Object
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# File 'lib/fluent/plugin/in_kafka.rb', line 276 def consume offset = @next_offset @fetch_args[:offset] = offset = @kafka.(@fetch_args) return if .size.zero? es = Fluent::MultiEventStream.new tag = @topic_entry.topic tag = @add_prefix + "." + tag if @add_prefix tag = tag + "." + @add_suffix if @add_suffix .each { |msg| begin record = @parser.call(msg, @topic_entry) case @time_source when :kafka record_time = Fluent::EventTime.from_time(msg.create_time) when :now record_time = Fluent::Engine.now when :record if @time_format record_time = @time_parser.parse(record[@record_time_key]) else record_time = record[@record_time_key] end else $log.fatal "BUG: invalid time_source: #{@time_source}" end if @kafka_message_key record[@kafka_message_key] = msg.key end es.add(record_time, record) rescue => e $log.warn "parser error in #{@topic_entry.topic}/#{@topic_entry.partition}", :error => e.to_s, :value => msg.value, :offset => msg.offset $log.debug_backtrace end } offset = .last.offset + 1 unless es.empty? @router.emit_stream(tag, es) if @offset_manager @offset_manager.save_offset(offset) end @next_offset = offset end end |
#on_timer ⇒ Object
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# File 'lib/fluent/plugin/in_kafka.rb', line 268 def on_timer @callback.call rescue => e # TODO log? $log.error e.to_s $log.error_backtrace end |